Hello! good morning, today i will created an article about What To Do And Step By Step Solution!
When you have a starting problem on a Ford Expedition, the first thing you should do is check in which system exactly the fault is located. In this post we are going to show you a set of steps so you can know why your Ford Expedition no arranca and thus solve quickly.
If you start to observe this inconvenience from the point of view of an expert, you will be buying time. An experienced mechanic will quickly begin the diagnosis by reviewing the most frequent failures.
What to do if my Ford Expedition won’t start?
You should know that the possibilities are extensive if you take into account: the electrical system, the combustion system, the ignition system, the computer or the devices and parts within its influence assembly (which are many), the security system and a mechanical problem related to the engine.
1- Check the boot system
You should start by checking the starter circuit. The starter motor must engage the flexplate gears and turn the engine over for it to start. This occurs at the moment the key is in the full start position.
If no noise is emitted when the key is in the start position, the exact fault location has been found. If it is not and the starter also works, then the starter circuit test procedures can be ignored.
You can read: Frequent failures with starter motor
2- Check the battery
If your Ford Expedition still won’t start, then you should keep checking. Raise the hood and inspect the battery for any irregularities, such as corrosion or loose or broken terminals, and repair immediately if necessary. Now, if you find any kind of problem, you should try to fix it and try to start the vehicle again. Continue only if the fault has not been fixed.
3- Check the battery voltage
You should check the battery voltage with the help of a voltmeter. You must connect the red cable of the voltmeter to the positive terminal and the black cable to the respective negative contact. The voltage should be between 12.5 to 12.75, you should know that if the voltage is one or more volts lower, the battery is dead or has a bad cell. Charge the battery and try again. If the voltage goes up to the proper numbers, try the crank again by having a friend turn the key to crank while you watch the voltmeter.
Well, if the engine starts or if it doesn’t, what really matters is the voltmeter reading when the key is in the starter. If the potential difference or voltage drops below 10.5 volts, the battery is bad and needs to be replaced.
In case the voltage does not drop and the engine starts, it is necessary to check the voltmeter again. The voltage should now be 13.8 to 14.5 volts if the alternator is in excellent condition. If the voltage is incorrect, the alternator needs to be replaced.. Now, if the battery voltage is okay and the engine still won’t try to start, then the starter circuit is responsible.
4- Check the fuses and the relay
You should also check the fuse and relay in the fuse box.. If the fuse and relay are OK they should do their job, check the power to the starter solenoid by connecting the black lead from the voltmeter to a correct ground and using the red lead to probe the terminal where the red high voltage wire connects. diameter at the starter solenoid.
If there is no voltage or potential difference, the cable between the solenoid and the battery is bad. If voltage is present, you should pull on the small wire from the solenoid. Examine the connector on this cable while your friend turns the key to start. If there is voltage or potential difference, the starter motor is bad. If there is no voltage, then the ignition switch is faulty.
5- Check if there is a failure in the computer system
You should check for a computer system fault by turning the key to the on position with the engine off. You must plug the code scanner into the respective OBD port in the lower left area of the steering column. Then you must press the “File” and the scanner will show you the fault codes of the irregularities it has found.
The code it is going to display is a letter and four numbers. The letter is the one that indicates the location and the numbers the fault. You should compare the code to the attached code sheet and you will be presented with a description of the bug. You must correct the error and try again.
6- Check the fuel system
You need to check out the fuel system.. Open the fuel cap and have your helper turn the key all the way down for three seconds and then back to the off position for four seconds. If you don’t hear the fuel pump, try a more pinpoint test.
Remove the air inlet duct to the throttle body, and then you must hold the throttle linkage open. Give the intake manifold a good squirt of carb cleaner and try again. If the engine starts and runs for a few seconds, the fuel pump is at fault. If it still won’t start, check the ignition.
7- Spark plug wire
Pull out a spark plug wire. Take a test plug and place it in the intake or in the block where it will be connected to ground. You should have the helper try to start the engine and watch the spark plug. An excellent spark indicates an internal problem in the engine. If there is no spark, it means that the ignition system is bad.
things you will need
The tools or things that you are going to use to check a Ford Expedition that will not start are the following:
When you have a starting problem on a Ford Expedition, the first thing you should do is check in which system exactly the fault is located. In this post we are going to show you a set of steps so you can know why your Ford Expedition no arranca and thus solve quickly.
If you start to observe this inconvenience from the point of view of an expert, you will be buying time. An experienced mechanic will quickly begin the diagnosis by reviewing the most frequent failures.
What to do if my Ford Expedition won’t start?
You should know that the possibilities are extensive if you take into account: the electrical system, the combustion system, the ignition system, the computer or the devices and parts within its influence assembly (which are many), the security system and a mechanical problem related to the engine.
1- Check the boot system
You should start by checking the starter circuit. The starter motor must engage the flexplate gears and turn the engine over for it to start. This occurs at the moment the key is in the full start position.
If no noise is emitted when the key is in the start position, the exact fault location has been found. If it is not and the starter also works, then the starter circuit test procedures can be ignored.
You can read: Frequent failures with starter motor
2- Check the battery
If your Ford Expedition still won’t start, then you should keep checking. Raise the hood and inspect the battery for any irregularities, such as corrosion or loose or broken terminals, and repair immediately if necessary. Now, if you find any kind of problem, you should try to fix it and try to start the vehicle again. Continue only if the fault has not been fixed.
3- Check the battery voltage
You should check the battery voltage with the help of a voltmeter. You must connect the red cable of the voltmeter to the positive terminal and the black cable to the respective negative contact. The voltage should be between 12.5 to 12.75, you should know that if the voltage is one or more volts lower, the battery is dead or has a bad cell. Charge the battery and try again. If the voltage goes up to the proper numbers, try the crank again by having a friend turn the key to crank while you watch the voltmeter.
Well, if the engine starts or if it doesn’t, what really matters is the voltmeter reading when the key is in the starter. If the potential difference or voltage drops below 10.5 volts, the battery is bad and needs to be replaced.
In case the voltage does not drop and the engine starts, it is necessary to check the voltmeter again. The voltage should now be 13.8 to 14.5 volts if the alternator is in excellent condition. If the voltage is incorrect, the alternator needs to be replaced.. Now, if the battery voltage is okay and the engine still won’t try to start, then the starter circuit is responsible.
4- Check the fuses and the relay
You should also check the fuse and relay in the fuse box.. If the fuse and relay are OK they should do their job, check the power to the starter solenoid by connecting the black lead from the voltmeter to a correct ground and using the red lead to probe the terminal where the red high voltage wire connects. diameter at the starter solenoid.
If there is no voltage or potential difference, the cable between the solenoid and the battery is bad. If voltage is present, you should pull on the small wire from the solenoid. Examine the connector on this cable while your friend turns the key to start. If there is voltage or potential difference, the starter motor is bad. If there is no voltage, then the ignition switch is faulty.
5- Check if there is a failure in the computer system
You should check for a computer system fault by turning the key to the on position with the engine off. You must plug the code scanner into the respective OBD port in the lower left area of the steering column. Then you must press the “File” and the scanner will show you the fault codes of the irregularities it has found.
The code it is going to display is a letter and four numbers. The letter is the one that indicates the location and the numbers the fault. You should compare the code to the attached code sheet and you will be presented with a description of the bug. You must correct the error and try again.
6- Check the fuel system
You need to check out the fuel system.. Open the fuel cap and have your helper turn the key all the way down for three seconds and then back to the off position for four seconds. If you don’t hear the fuel pump, try a more pinpoint test.
Remove the air inlet duct to the throttle body, and then you must hold the throttle linkage open. Give the intake manifold a good squirt of carb cleaner and try again. If the engine starts and runs for a few seconds, the fuel pump is at fault. If it still won’t start, check the ignition.
7- Spark plug wire
Pull out a spark plug wire. Take a test plug and place it in the intake or in the block where it will be connected to ground. You should have the helper try to start the engine and watch the spark plug. An excellent spark indicates an internal problem in the engine. If there is no spark, it means that the ignition system is bad.
things you will need
The tools or things that you are going to use to check a Ford Expedition that will not start are the following:
